Concrete Block Manufacturing 3D model is available on CGTrader for $60. Original author: laprojects2020.
PDF (PDF, filesize: 62 MB), DXF (DXF, filesize: 62 MB), DWG (AutoCAD, filesize: 62 MB), IAM (Autodesk Inventor, filesize: 2.51 MB), IDW (Autodesk Inventor, filesize: 10 KB)